Contravera

Contravera is a mono-color-matters plane where the space the plane occupies is inhabited by five different fragments of the plane, separated into the purest forms of each mana. Life on each fragment is affected likewise. The Artifact creatures of Faramor show how their life is governed by order.
Unison shows that the creatures of Faremor are intrinsically connected to each other, and are able to act better when together.

The Wizards of the towers of Hohen were the first to discover that the fragments were fusing together. The were also the first to discover the calamity that would ensue if this were to happen.
Hohen is dominated by wizards. They know everything there is to know, inside their own little bubbles. They are highly isolationist, though; That's why when Artelia, one of the Great Wizards discovered what was happening, they got together for the first time to prevent it from happening.

Dasmuun is Black. It's archetypal tribe, Shades, are pure self. They don't care about anything else.
Moonglare shows off one of the returning mechanics, Exalted. Exalted in this case indicates their innate desire to focus on themselves. While all contribute, only one makes it through.

Each fragment has the same topography as every other fragment, but it reflects the unique nature of the mana flowing through it. Kalcha's forests are burnt to ash, and it's rivers flow with lava.
Kalcha's Elementals have nothing but passion. This is represented by the Conjure mechanic, allowing the elementals to erupt in a torrent of fire and mana.

Glim is the green mana fragment, and it's creatures are either lands using the Animate ability, plants, or dryads.
Animate shows that the very nature itself is very-much alive and fighting on this fragment. Leafwhisper shows this mechanic off.
(I'm not 100% on this mechanic, so if you have any ideas for tweaks that modify it, I'm game.)